fix: updated readme

README.md

@@ -1,2 +1,35 @@
 # dttmr-api
 
+An API backend for dittmar.dev, written in Go.
+
+## Getting started
+
+Building
+```shell
+make build
+```
+
+Running
+```shell
+make run
+```
+
+Run tests
+```
+make test
+```
+
+Run tests with coverage
+```
+make test-cover
+```
+
+Generate swagger documentation
+```shell
+make swag
+```
+
+Build docker image
+```shell
+make docker
+```